Circuit overload protection and automatic reset device

Abstract

The invention relates to the technical field of circuit protection, and discloses a circuit overload protection and automatic reset device. The right side of a piston is provided with a temperature sensing block, the inner bottom wall of an inner shell is provided with a spring, the inner shell is internally provided with a fixing plate and a connecting plate, the left side of the fixing plate isprovided with a fixing wheel, the right side of a first supporting rod is provided with a first contact point, the inner top wall of the inner shell is provided with a fixing rod and a second supporting rod, the bottom of the fixing rod is provided with a rotating shaft, the left side of the second supporting rod is provided with a second contact point, and a fuse is arranged between the second contact point and the first contact point. When the circuit is overloaded, the piston pushes the temperature sensing block to move, the temperature sensing block pushes the lower section of a movable plate to move rightwards through the connecting rod, the upper section of the movable plate is driven to move upwards, the left side of the fuse moves downwards, and the circuit forms an open circuit. When the temperature returns to be normal, the piston moves leftwards, the temperature sensing block drives the movable plate to move leftwards through the connecting rod, the movable plate drives thebump to move downwards, the fuse resets, and the circuit forms closed circuit.

Description

technical field [0001] The invention relates to the technical field of circuit protection, in particular to a circuit overload protection and automatic reset device. Background technique [0002] With the rapid development of the times, people use electrical appliances and electronic products more and more commonly, and these electrical appliances and electronic products are inseparable from the power supply, which makes people pay more attention to the safety of power supply. The overload current protection device is installed in the circuit. Generally, the overload protection device of the line uses a fuse. When the current in the line exceeds the rated current, the fuse will automatically fuse to protect the safety of the line. However, the fuse needs to be replaced with a new one after the fuse is blown to continue The work and operation are cumbersome and waste materials. Therefore, we propose a circuit overload protection and automatic reset device. Contents of the i...

AI Technical Summary

Problems solved by technology

[0004] Aiming at the deficiencies of the prior art, the present invention provides a circuit overload protection and automatic reset device, which has the advantages of simple operation and no waste of materials to protect the circuit safety, and solves the problem of cumbersome operation and the need to replace the fuse

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